Absorbent structure containing individualized, polycarboxylic ac

Details Absorbent structure containing individualized, polycarboxylic ac Absorbent structure containing individualized, polycarboxylic ac

1990-10-17

1992-08-11

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

81161, 8129, 811562, 1621576, D21H 1120, D06M 1300

Patent

active

051375370

ABSTRACT:
Disclosed are absorbent structures containing individualized, crosslinked fibers. The individualized, crosslinked fibers preferably have a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent reacted with the fibers in the form of intrafiber crosslink bonds. Preferably, the crosslinking agent is citric acid, and between about 0.5 mole % and about 10.0 mole % crosslinking agent react to form the intrafiber crosslink bonds. Also preferably, the absorbent structures have actual dry densities greater than their corresponding equilibrium wet densities, and expand upon wetting. The absorbent structures may also contain hydrogel-forming material.

REFERENCES:
patent: 2759787 (1956-08-01), Touey et al.
patent: 3526048 (1970-09-01), Rowland et al.
B. A. Kottes Andrews et al. "Efficient Ester Crosslink Finishing for Formaldehyde-Free Durable Press Cotton Fabrics" American Dyestuff Reporter, vol. 78, pp. 15-23 (Jun. 1989).

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